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Regression in MemoryError displaying (_PyErr_Display fallback to C impl of print_exception) #110912

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#110921
Closed
Regression in MemoryError displaying (_PyErr_Display fallback to C impl of print_exception)#110912
#110921
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pablogsal
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type-bugAn unexpected behavior, bug, or error

Description

@chgnrdv
chgnrdv
opened on Oct 16, 2023

Bug report

Bug description:

After e733136:

>>> raise MemoryError()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
object address  : 0x7fd3b6037540
object refcount : 3
object type     : 0x556d6e04cf40
object type name: MemoryError
object repr     : MemoryError()
lost sys.stderr

cc @pablogsal

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

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Activity

  1. chgnrdv
    added
    type-bugAn unexpected behavior, bug, or error
    on Oct 16, 2023
  2. pablogsal
    self-assigned this
    on Oct 16, 2023

  3. serhiy-storchaka commented on Oct 16, 2023

    @serhiy-storchaka
    serhiy-storchaka
    on Oct 16, 2023
    Member

    Seen this with real MemoryError, but I thought it was because the error handler couldn't run when out of memory. But if it produces this for an artificial MemoryError, something is very wrong.

  4. pablogsal
    added a commit that references this issue on Oct 16, 2023

    pythongh-110912: Correctly display tracebacks for MemoryError excepti…

    42796e6

  5. pablogsal commented on Oct 16, 2023

    @pablogsal
    pablogsal
    on Oct 16, 2023
    Member

    Seen this with real MemoryError, but I thought it was because the error handler couldn't run when out of memory. But if it produces this for an artificial MemoryError, something is very wrong.

    This was caused by an (incorrect) forceful fallback to the C implementation of the traceback machinery after we switched to use the Python traceback module as the main mechanism. Fixed in #110921

  6. pablogsal
    closed this as completedin #110921on Oct 16, 2023
  7. pablogsal
    added a commit that references this issue on Oct 16, 2023

    gh-110912: Correctly display tracebacks for MemoryError exceptions us…

    b3c9faf
  8. aisk
    added a commit that references this issue on Feb 11, 2024

    pythongh-110912: Correctly display tracebacks for MemoryError excepti…

    a2b11d3
  9. Glyphack
    added a commit that references this issue on Sep 2, 2024

    pythongh-110912: Correctly display tracebacks for MemoryError excepti…

    62b0d14
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